CN105186528A - Static synchronous compensation device - Google Patents

Static synchronous compensation device Download PDF

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Publication number
CN105186528A
CN105186528A CN201510535451.XA CN201510535451A CN105186528A CN 105186528 A CN105186528 A CN 105186528A CN 201510535451 A CN201510535451 A CN 201510535451A CN 105186528 A CN105186528 A CN 105186528A
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switching transistor
connects
bridge
emitter
distribution network
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CN105186528B (en
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田兵
王建邦
喻磊
于力
雷金勇
许爱东
郭晓斌
李鹏
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Research Institute of Southern Power Grid Co Ltd
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Power Grid Technology Research Center of China Southern Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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Abstract

The invention relates to a static synchronous compensation device. The device comprises a charging/discharging module and a plurality of single-phase circuit modules. Each single-phase circuit module comprises an inverter module used for inverting a direct current voltage to an alternating current voltage, and a conversion module used for boosting/bucking the direct current voltage. One end of each inverter module is connected with the phase line of a power distribution network. All the inverter modules of the plurality of single-phase circuit modules are connected with different phase lines of the power distribution network. The other end of each inverter module is connected with one end of the corresponding conversion module. The other ends of all the conversion modules are connected with the charging/discharging module. By means of the static synchronous compensation device, the reactive power of the power distribution network and the un-balanced load of the power distribution network are compensated at the same time based on a simple circuit structure. Therefore, the device has a positive significance in improving the power factor of the power distribution network and lowering the economical cost of the power distribution network.

Description

Static synchronous compensation arrangement
Technical field
The present invention relates to automatic control technology of power system field, particularly relate to a kind of static synchronous compensation arrangement.
Background technology
Along with the development of modern industry and industrial equipment, power consumption equipment highlights gradually for the impact of the quality of power supply of power distribution network, when some is non-linear, when impact and uncompensated load access electric power system, as arc furnace, during the equipment access electric power systems such as rolling mill, the voltage fluctuation of power distribution network can be caused, the power quality problems such as flickering and power supply imbalance, but some voltage-sensitive load in power distribution network, as computer system, control system, precision instruments etc. but have higher requirement to the quality of power supply of power distribution network, therefore the uncompensated load in power distribution network is compensated, and then the raising quality of power supply is very necessary.Meanwhile, in power distribution network, the existence of various load will certainly produce reactive power, and causing the power factor of power distribution network to reduce, therefore compensate for reactive power, is also one of key factor must considered in Distribution Network Practical process.
Summary of the invention
Based on this, be necessary, for Power Distribution Network Reactive Power Compensation and unbalance load compensation problem, to provide a kind of static synchronous compensation arrangement.
A kind of static synchronous compensation arrangement, comprise charge-discharge modules and several single phase circuit modules, single phase circuit module described in each comprises the inversion module for by direct voltage inversion being alternating voltage and is used for the conversion module of direct voltage lifter change, one end of described inversion module connects power distribution network phase line and inversion module in single phase circuit module described in each connects different power distribution network phase lines, the other end of described inversion module connects one end of described conversion module, and the other end of described conversion module connects described charge-discharge modules.
In above-mentioned static synchronous compensation arrangement, inversion module can realize the independent compensation to each phase reactive power of power distribution network, thus improve the power factor of power distribution network, this device realizes the exchange of the active power of each phase of power distribution network by each single phase circuit module and the synergy of charging charge-discharge modules simultaneously, final realization, to the balance of power distribution network active power, namely compensates power distribution network uncompensated load.This static synchronous compensation arrangement realizes compensating while power distribution network reactive power and uncompensated load with simple circuit structure, has positive meaning for the power factor of raising power distribution network, the Financial cost of reduction power distribution network.
Accompanying drawing explanation
Fig. 1 is the structural representation of one of them embodiment of static synchronous compensation arrangement of the present invention;
Fig. 2 is the circuit diagram of one of them embodiment single phase circuit module;
Fig. 3 is the circuit diagram of H bridge inverter;
Fig. 4 is the circuit diagram of DC/DC full-bridge converter;
Fig. 5 is the circuit diagram of another embodiment of static synchronous compensation arrangement of the present invention.
Embodiment
Below will for three-phase four-wire system power distribution network; by reference to the accompanying drawings and preferred embodiment static synchronous compensation arrangement proposed by the invention is described in detail; it should be noted that; although given herein go out each embodiment all for three-phase four-wire system power distribution network; but should in this, as the restriction to protection scheme of the present invention; for a person skilled in the art; around design of the present invention; static synchronous compensation arrangement can be applied to the power distribution network of other lines, as three-phase five-wire mode power distribution network etc.
Consult Fig. 1, Fig. 1 is the structural representation of one of them embodiment of static synchronous compensation arrangement of the present invention.
In the present embodiment, static synchronous compensation arrangement comprises 1 charge-discharge modules 10 and 3 single phase circuit modules 20, each single phase circuit module 20 comprises the inversion module 21 for by direct voltage inversion being alternating voltage and is used for the conversion module 22 of direct voltage lifter change, one end of inversion module 21 connects power distribution network phase line, and the inversion module in different single phase circuit module connects different power distribution network phase lines, the other end of inversion module 21 connects one end of conversion module 22, the other end of conversion module 22 connects charge-discharge modules 10, wherein, charge-discharge modules 10 is for absorbing and storage of electrical energy from each single phase circuit module, or to each single phase circuit module release electric energy.Because inversion module 21 is for being alternating voltage by direct voltage inversion, comprise the capacitive load needed for inverter voltage, and capacitive load can provide the energy set up needed for alternating electromagnetic field for the equipment in power distribution network, energy is mutually exchanged between capacitive load and the inductive load of equipment, namely the reactive power that the reactive power required for inductive load of equipment can be exported by capacitive load compensates, thus the compensation to power distribution network reactive power is realized, and all connect inversion module due to each power distribution network phase line, therefore, it is possible to realize the independent compensation to the reactive power of each phase of power distribution network.Illustrate the general principle of static synchronous compensating circuit unbalance load compensation below: first, power distribution network phase line 30 is power distribution network, comprise A phase line, B phase line, C phase line and neutral line N, the neutral line and three phase lines form the network line for electric energy transmitting jointly; Secondly, unbalance load compensation principle is analyzed, assuming that the three phase power of power distribution network is respectively P when not circuit loss a, P b, P c, then average power is P avg=(P a+ P b+ P c)/3, and P a< P b< P avg< P c, the connected single phase circuit module of A phase is P from the active power that power distribution network absorbs avg-P a, and for charging to charge-discharge modules 10; The connected single phase circuit module of B phase is P from the active power that power distribution network absorbs avg-P b, and for charging to charge-discharge modules 10; The connected single phase circuit module of C phase then injects active power to power distribution network, and the active power of injection is P c-P avg, this power obtains from charge-discharge modules 10 through single phase circuit module, and namely charge-discharge modules 10 is to the C phase discharge of power distribution network, and its discharge power is P c-P avg.Due to (P avg-P a)+(P avg-P b)=P c-P avg, namely the active power that absorbs from power distribution network of static synchronous compensation arrangement is equal with the active power discharged power distribution network.Through overcompensation, the active power of each phase of power distribution network is finally equal to average power P avg, reach balance, thus finally realize the compensation to power distribution network uncompensated load by static synchronous compensating circuit.
Static synchronous compensation arrangement in the present embodiment, utilize the independent compensation of inversion module realization to power distribution network three phase reactive power, exchanged by the active power of charge-discharge modules to power distribution network simultaneously, static synchronous compensation arrangement to be gained merit the little absorption active power mutually charging to charge-discharge modules of exerting oneself from power distribution network, simultaneously absorb active power from charge-discharge modules to gain merit large release active power mutually of exerting oneself to power distribution network, static synchronous compensation arrangement is made to equal the active power to power distribution network release from the active power that power distribution network absorbs, final realization is to the balance of power distribution network three phases active power, namely the compensation to power distribution network uncompensated load is realized.Above-mentioned static synchronous compensation arrangement realizes compensating while power distribution network reactive power and uncompensated load with simple circuit structure, has positive meaning for the power factor of raising power distribution network, the Financial cost of reduction power distribution network.
As a kind of concrete execution mode, charge-discharge modules is common DC bus electric capacity C m, for storing from the electric energy of single phase circuit module absorption or to single phase circuit module release electric energy.
As a kind of concrete execution mode, the circuit diagram of single phase circuit module 20 shown in Figure 2, wherein, inversion module is H bridge inverter, and this inverter comprises H bridge (H-Bridge, a HBI) HBI1, DC capacitor C cwith ac filter inductance L f, wherein, the DC side parallel of a H bridge connects (namely and connect) DC capacitor C c, one end of the AC of a H bridge is through ac filter inductance L fconnect power distribution network phase line (the phase line A as in Fig. 2), the other end of the AC of a H bridge connects the neutral line (neutral line N namely in Fig. 2) of power distribution network, wherein, and ac filter inductance L ffor the higher harmonic current in the reactive current that filtering H bridge inverter exports, DC capacitor C cthen play the effect of stable H bridge DC side voltage.H bridge inverter, for detecting the reactive current of power distribution network, by the break-make of each switching tube in control H bridge inverter, exports the equal-sized reactive current of reactive current with power distribution network, thus realizes the compensation of power distribution network reactive power.
As a kind of concrete execution mode, conversion module 22 is DC/DC full-bridge converter, for carrying out discharge and recharge to charge-discharge modules.
Preferably, the circuit diagram of single phase circuit module 20 shown in Figure 2, wherein, DC/DC full-bridge converter comprises the 2nd H bridge HBI2, high frequency transformer (HighFrequencyTransformer, HFT), inductance L and the 3rd H bridge HBI3, the 2nd H bridge HBI2 DC side and meet DC capacitor C cthe AC of the 2nd H bridge HBI2 connects the high-pressure side of high frequency transformer HFT, one end of the low-pressure side of high frequency transformer HFT connects one end of the 3rd H bridge HBI3 AC through inductance L, the other end of the low-pressure side of high frequency transformer HFT connects the other end of the 3rd H bridge HBI3 AC, and the DC side of the 3rd H bridge HBI3 connects charge-discharge modules.
Be described in detail to the concrete structure of the inversion module in single phase circuit module and conversion module below.
See Fig. 3, be the circuit diagram of H bridge inverter in inversion module 21, H bridge inverter comprises a H bridge HBI1, DC capacitor C cwith ac filter inductance L f, one H bridge HBI1 comprises 4 switching transistors and 4 diodes, 4 switching transistors are respectively the first switching transistor T1, second switch transistor T2, 3rd switching transistor T3 and the 4th switching transistor T4, 4 diodes are respectively the first diode D1, second diode D2, 3rd diode D3 and the 4th diode D4, a diode is connect between the collector and emitter of each switching transistor, the anode of this diode and with it and the emitter of the switching transistor connect be connected, the negative electrode of this diode and with it and the collector electrode of the switching transistor connect be connected, such as the first switching transistor T1 and the first diode D1 and when connecing, the anode of the first diode D1 connects the emitter connection of the first switching transistor T1, the negative electrode of the first diode D1 then connects the collector electrode of the first switching transistor T1, in a H bridge HBI1, the emitter of the first switching transistor T1 connects collector electrode and the ac filter inductance L of second switch transistor T2 respectively fone end, ac filter inductance L fthe other end connect power distribution network phase line, the collector electrode of the first switching transistor T1 connects collector electrode and the DC capacitor C of the 3rd switching transistor T3 respectively cone end, the emitter of second switch transistor T2 connects emitter and the DC capacitor C of the 4th switching transistor T4 respectively cthe other end, the emitter of the 3rd switching transistor T3 connects collector electrode and the power distribution network neutral line of the 4th switching transistor T4 respectively.The Main Function of H bridge inverter is the reactive current for detecting power distribution network, by the break-make of control H bridge inverter bridge arm, makes H bridge inverter export the equal-sized reactive current of reactive current with power distribution network, through ac filter inductance L fafter higher harmonic current in the reactive current that filtering H bridge inverter exports, to power distribution network input reactive current, thus compensate the reactive power of power distribution network.
See Fig. 4, for the circuit diagram of DC/DC full-bridge converter in conversion module 22, DC/DC full-bridge converter comprises the 2nd H bridge HBI2, high frequency transformer HFT, inductance L and the 3rd H bridge HBI3, wherein, 2nd H bridge HBI2 comprises 4 switching transistors and 4 diodes, 4 switching transistors are respectively the 5th switching transistor T5, 6th switching transistor T6, 7th switching transistor T7 and the 8th switching transistor T8, 4 diodes are respectively the 5th diode D5, 6th diode D6, 7th diode D7 and the 8th diode D8, a diode is connect between the collector and emitter of each switching transistor, the anode of this diode and with it and the emitter of the switching transistor connect be connected, the negative electrode of this diode and with it and the collector electrode of the switching transistor connect be connected, such as the 5th switching transistor T5 and the 5th diode D5 and when connecing, the anode of the 5th diode D5 connects the emitter connection of the 5th switching transistor T5, the negative electrode of the 5th diode D5 then connects the collector electrode of the 5th switching transistor T5, the emitter of the 5th switching transistor T5 connects collector electrode and the on high-tension side one end of high frequency transformer HFT of the 6th switching transistor T6 respectively, and the collector electrode of the 5th switching transistor T5 connects the collector electrode of the 7th switching transistor T7 and the collector electrode of the first switching transistor T1 respectively, the emitter of the 6th switching transistor T6 connects the emitter of the 8th switching transistor T8 and the emitter of second switch transistor T2 respectively, the emitter of the 7th switching transistor T7 connects collector electrode and the on high-tension side other end HFT of high frequency transformer of the 8th switching transistor T8 respectively.
Similarly, 3rd H bridge HBI3 comprises 4 switching transistors and 4 diodes, 4 described switching transistors are respectively the 9th switching transistor T9, tenth switching transistor T10, 11 switching transistor T11 and twelvemo close transistor T12, 4 diodes are respectively the 9th diode D9, tenth diode D10, 11 diode D11 and the 12 diode D12, a diode is connect between the collector and emitter of each switching transistor, the anode of this diode and with it and the emitter of the switching transistor connect be connected, the negative electrode of this diode and with it and the collector electrode of the switching transistor connect be connected, such as the 9th switching transistor T9 and the 9th diode D9 and when connecing, the anode of the 9th diode D9 connects the emitter connection of the 9th switching transistor T9, the negative electrode of the 9th diode D9 then connects the collector electrode of the 9th switching transistor T9, the emitter of the 9th switching transistor T9 connects the collector electrode of the tenth switching transistor T10 and one end of inductance L respectively, the other end of inductance L connects one end of high frequency transformer HFT low-pressure side, and the collector electrode of the 9th switching transistor T9 connects the collector electrode of the 11 switching transistor T11 and one end of charge-discharge modules respectively, the emitter of the tenth switching transistor T10 connects twelvemo respectively and closes the emitter of transistor T12 and the other end of charge-discharge modules, the emitter of the 11 switching transistor T11 connects twelvemo respectively and closes the collector electrode of transistor T12 and the other end of high frequency transformer low-pressure side HFT.
In DC/DC full-bridge converter as shown in Figure 4, the full-bridge type converter unit of a voltage feedback is respectively had at the two ends of high frequency transformer HFT, the energy flow between power distribution network and common DC bus electric capacity can be controlled by the drived control phase angle difference between change converter unit, large sluggish time delay passive component is not generally had owing to adopting in the converter of this Control Cooling, therefore the dynamic response of converter is very fast, simultaneously because converter is buck operating unit, its filter element is few, therefore DC/DC full-bridge converter also belongs to a kind of simple single order systems stabilisation simultaneously.DC/DC full-bridge converter carries out discharge and recharge to charge-discharge modules after carrying out voltage up-down conversion to direct voltage, while compensating, improves the stability of static synchronous compensation arrangement together with charge-discharge modules to the uncompensated load of power distribution network.
In another embodiment, one H bridge, each switching transistor in 2nd H bridge and the 3rd H bridge is insulated gate bipolar transistor (InsulatedGateBipolarTransistor, IGBT), a kind of compound full-control type voltage driven type power semiconductor that IGBT is made up of insulating gate type field effect tube and bipolar transistor, on/off speed with mos field effect transistor is fast, input impedance is high, driving power is little, drive circuit current capacity that is simple and bipolar transistor is large, blocking voltage is high, the plurality of advantages such as on-state voltage drop is low.Figure 5 shows that the circuit diagram of static synchronous compensation arrangement, in the present embodiment, mainly comprise: H bridge inverter, it comprises a H bridge HBI1, DC capacitor C cwith ac filter inductance L f, the DC side of a H bridge HBI1 also meets DC capacitor C c, one end of the AC of a H bridge HBI1 is through ac filter inductance L fconnect power distribution network phase line, the other end of the AC of a H bridge HBI1 connects power distribution network neutral line N; DC/DC full-bridge converter, it comprises the 2nd H bridge HBI2, high frequency transformer HFT, inductance L and the 3rd H bridge HBI3, and the DC side of the 2nd H bridge HBI2 also meets DC capacitor C cthe AC of the 2nd H bridge HBI2 connects the high-pressure side of high frequency transformer HFT, one end of the low-pressure side of high frequency transformer HFT connects a port of the 3rd H bridge HBI3 AC through inductance L, the other end of the low-pressure side of high frequency transformer HFT connects another port of the 3rd H bridge HBI3 AC, common DC bus electric capacity C mbe connected to the DC side of the 3rd H bridge HBI3 in each single phase circuit module.In each H bridge, include 4 IGBT and 4 diodes, as shown in Figure 5, wherein the drive circuit of IGBT can control application-specific integrated circuit (ASIC) by the raster data model corresponding according to its Capacity Selection to their connected mode.
As the optional execution mode of one, transistor is utilized to replace each IGBT, form the static synchronous compensation arrangement based on transistor, this device is identical with the static synchronous compensation arrangement structure based on IGBT, and transistor can realize the on-off action of IGBT equally in each H bridge, therefore, it is possible to realize reactive power compensation and unbalance load compensation.In addition, except transistor, for static synchronous compensation arrangement proposed by the invention, power field effect transistor (MetalOxideSemiconductorFieldEffectTransistor, MOSFET), gate level turn-off thyristor (Gate-Turn-OffThyristor, GTO), integrated gate commutated thyristor (IntegratedGatedCommutatedThyristor, and electron injection enhancement gate transistor (InjectionEnhancedGateTransistor IGCT), etc. IEGT) power electronic device is suitable for too, with IGBT similarly, each power electronic device above-mentioned all can realize conducting by control signal, also can realize turning off by control signal, thus realize reactive power compensation and the unbalance load compensation of static synchronous compensation arrangement.In fact, except above-mentioned power electronic device, other all-controlling power electronics devices all can be applied to static synchronous compensation arrangement proposed by the invention, are realized the corresponding function of static synchronous compensation arrangement by the on-off action of all-controlling power electronics device.
Below in conjunction with the circuit diagram of the static synchronous compensation arrangement shown in Fig. 5, reactive power compensation is realized to this device simultaneously and unbalance load compensation is described in detail.
For the compensation of power distribution network reactive power, realize mainly through H bridge inverter.Reactive power is that electric equipment can the necessary requirement of work done, and reactive current transmission in electrical network that reactive power produces can cause line loss, reduces circuit transmission capacity, is therefore necessary to compensate at load side reactive power.In the process that static synchronous compensation arrangement compensates reactive power, the Main Function of H bridge inverter is the reactive current for detecting power distribution network, by the break-make of each switching transistor in control H bridge inverter, H bridge inverter is made to export the equal-sized reactive current of reactive current with power distribution network, through ac filter inductance L fafter higher harmonic current in the reactive current that filtering H bridge inverter exports, to power distribution network input reactive current, thus realize the compensation of power distribution network reactive power.
For the principle of unbalance load compensation, can description below be made:
Respectively with the A phase line of power distribution network, B phase line, 3 single phase circuit modules that C phase line is connected, the exchange of power distribution network active power is realized by charge-discharge modules 10, concrete, single phase circuit module (such as, single phase circuit module 20 and single phase circuit module 40) to gain merit little absorption active power mutually of exerting oneself from power distribution network phase line, charge-discharge modules 10 is charged, charge-discharge modules 10 by single phase circuit module (such as simultaneously, single phase circuit module 50) to meritorious large release active power mutually of exerting oneself, static synchronous compensation arrangement is made to equal its active power discharged power distribution network from the active power that power distribution network absorbs, realize the balance to power distribution network three phases active power, namely the compensation to power distribution network uncompensated load is realized.
To sum up, static synchronous compensation arrangement realizes compensating while power distribution network reactive power and uncompensated load with simple circuit structure, has positive meaning for the power factor of raising power distribution network, the Financial cost of reduction power distribution network.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a static synchronous compensation arrangement, it is characterized in that, comprise charge-discharge modules and several single phase circuit modules, single phase circuit module described in each comprises the inversion module for by direct voltage inversion being alternating voltage and is used for the conversion module of direct voltage lifter change;
One end of described inversion module connects power distribution network phase line, and the inversion module in single phase circuit module described in each connects different power distribution network phase lines;
The other end of described inversion module connects one end of described conversion module;
The other end of described conversion module connects described charge-discharge modules.
2. static synchronous compensation arrangement according to claim 1, is characterized in that,
Described charge-discharge modules is common DC bus electric capacity.
3. static synchronous compensation arrangement according to claim 1 and 2, is characterized in that, described inversion module is H bridge inverter, and described H bridge inverter comprises a H bridge, DC capacitor and ac filter inductance;
The DC side of a described H bridge also connects described DC capacitor;
One end of the AC of a described H bridge connects power distribution network phase line through described ac filter inductance;
The other end of the AC of a described H bridge connects the power distribution network neutral line.
4. static synchronous compensation arrangement according to claim 3, is characterized in that, described conversion module is DC/DC full-bridge converter.
5. static synchronous compensation arrangement according to claim 4, is characterized in that, described DC/DC full-bridge converter comprises the 2nd H bridge, high frequency transformer, inductance and the 3rd H bridge;
The DC side of described 2nd H bridge also connects described DC capacitor;
The AC of described 2nd H bridge connects the high-pressure side of described high frequency transformer;
One end of the low-pressure side of described high frequency transformer connects one end of described 3rd H bridge AC through described inductance, the other end of the low-pressure side of described high frequency transformer connects the other end of described 3rd H bridge AC;
The DC side of described 3rd H bridge connects described charge-discharge modules.
6. static synchronous compensation arrangement according to claim 5, it is characterized in that, a described H bridge comprises 4 switching transistors and 4 diodes, and 4 described switching transistors are respectively the first switching transistor, second switch transistor, the 3rd switching transistor and the 4th switching transistor;
Connect a diode between the collector and emitter of switching transistor described in each, and the emitter of switching transistor is connected with the anode of diode;
The emitter of described first switching transistor connects the collector electrode of described second switch transistor and one end of ac filter inductance respectively, the other end of described ac filter inductance connects power distribution network phase line, and the collector electrode of described first switching transistor connects the described collector electrode of the 3rd switching transistor and one end of described DC capacitor respectively;
The emitter of described second switch transistor connects the described emitter of the 4th switching transistor and the other end of described DC capacitor respectively;
The emitter of described 3rd switching transistor connects collector electrode and the power distribution network neutral line of described 4th switching transistor respectively.
7. static synchronous compensation arrangement according to claim 6, it is characterized in that, described 2nd H bridge comprises 4 switching transistors and 4 diodes, and 4 described switching transistors are respectively the 5th switching transistor, the 6th switching transistor, the 7th switching transistor and the 8th switching transistor;
Connect a diode between the collector and emitter of switching transistor described in each, and the emitter of switching transistor is connected with the anode of diode;
The emitter of described 5th switching transistor connects collector electrode and the on high-tension side one end of described high frequency transformer of described 6th switching transistor respectively, and the collector electrode of described 5th switching transistor connects the collector electrode of described 7th switching transistor and the collector electrode of described first switching transistor respectively;
The emitter of described 6th switching transistor connects the described emitter of the 8th switching transistor and the emitter of second switch transistor respectively;
The emitter of described 7th switching transistor connects collector electrode and the on high-tension side other end of described high frequency transformer of described 8th switching transistor respectively.
8. static synchronous compensation arrangement according to claim 7, it is characterized in that, described 3rd H bridge comprises 4 switching transistors and 4 diodes, and 4 described switching transistors are respectively the 9th switching transistor, the tenth switching transistor, the 11 switching transistor and twelvemo and close transistor;
Connect a diode between the collector and emitter of switching transistor described in each, and the emitter of switching transistor is connected with the anode of diode;
The emitter of described 9th switching transistor connects the described collector electrode of the tenth switching transistor and one end of inductance respectively, the other end of described inductance connects one end of described high frequency transformer low-pressure side, and the collector electrode of described 9th switching transistor connects the described collector electrode of the 11 switching transistor and one end of described charge-discharge modules respectively;
The emitter of described tenth switching transistor connects described twelvemo respectively and closes the emitter of transistor and the other end of described charge-discharge modules;
The emitter of described 11 switching transistor connects described twelvemo respectively and closes the collector electrode of transistor and the other end of described high frequency transformer low-pressure side.
9. the static synchronous compensation arrangement according to any one of claim 6 to 8, is characterized in that,
Described switching transistor is insulated gate bipolar transistor.
10. the static synchronous compensation arrangement according to any one of claim 6 to 8, is characterized in that,
Described switching transistor is any one in transistor, power field effect transistor, gate level turn-off thyristor, integrated gate commutated thyristor and electron injection enhancement gate transistor.
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CN102136729A (en) * 2011-02-22 2011-07-27 西安交通大学 Series multi-level SVG (scalable vector graphics) topological structure based on phase shifting multiple winding rectifier transformer and control method thereof
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CN204905876U (en) * 2015-08-26 2015-12-23 南方电网科学研究院有限责任公司 Static synchronous compensation arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107248750A (en) * 2017-06-12 2017-10-13 国家电网公司 A kind of accumulation energy type power governor and distribution system for distribution system
CN109510222A (en) * 2018-12-05 2019-03-22 南方电网科学研究院有限责任公司 A kind of power distribution network compensation control circuit

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